85539436 has 24 divisors (see below), whose sum is σ = 155183616. Its totient is φ = 41228880.

The previous prime is 85539397. The next prime is 85539437. The reversal of 85539436 is 63493558.

It is a super-2 number, since 2×85539436² = 14633990222396192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85539392 and 85539401.

It is not an unprimeable number, because it can be changed into a prime (85539437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9201 + ... + 15991.

It is an arithmetic number, because the mean of its divisors is an integer number (6465984).

Almost surely, 2^85539436 is an apocalyptic number.

It is an amenable number.

85539436 is a deficient number, since it is larger than the sum of its proper divisors (69644180).

85539436 is a wasteful number, since it uses less digits than its factorization.

85539436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6909 (or 6907 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The square root of 85539436 is about 9248.7532132715. The cubic root of 85539436 is about 440.6111273804.

The spelling of 85539436 in words is "eighty-five million, five hundred thirty-nine thousand, four hundred thirty-six".